Doc. No: Unex-QSG-21-001
18/30
A printed version of this document is an uncontrolled copy
© 2023 Unex Technology Corporation – Company Confidential
8.1.2.
Internal Interfaces
8.1.2.1.
Mini PCIe Port (Optional)
A USB 2.0 device with mini PCIe form factor can be connected to the mini PCIe port
(J6). However please note that although the form factor is mini PCIe, the PCI Express
interface is not available.
Figure 12: Mini PCIe Port (J6)
Table 11: Mini PCIe pinout (J6, Row 0)
Pin
Symbol
I/O
Level (V)
Description
J6.1
WAKE#
I
OC
Sierra MC series: Wake host. (OC output. Active LOW)
J6.3
5V
O
5.0
5V power output for SOM-300 family
J6.5
5V
O
5.0
5V power output for SOM-300 family
J6.7
NC
-
-
Not connected
J6.9
GND
G
-
Ground
J6.11
NC
-
-
Not connected
J6.13
NC
-
-
Not connected
J6.15
GND
G
-
Ground
-
KEY
-
-
Mechanical Key
J6.17
UART2_TX
O
3.3
UART transmit data output for SOM-300 family
J6.19
UART2_RX
I
3.3
UART transmit data input for SOM-300 family
J6.21
GND
G
-
Ground
J6.23
NC
-
-
Not connected
J6.25
NC
-
-
Not connected
J6.27
GND
G
-
Ground
J6.29
GND
G
-
Ground
J6.31
NC
-
-
Not connected
J6.33
NC
-
-
Not connected
J6.35
GND
G
-
Ground
J6.37
GND
G
-
Ground
J6.39
3.3 Vaux
O
3.3
Max 1100mA
J6.41
3.3 Vaux
O
3.3
Max 1100mA
J6.43
GND
G
-
Ground
J6.45
5V
O
5
5V power output for SOM-300 family
J6.47
5V
O
5
5V power output for SOM-300 family
J6.49
1PPS
O
3.3
GNSS 1 pulse per second input
J6.51
TAMPER#
O
3.3
0=Tamper tripped, 1=Normal operation.
SW3.2 ON: J6.51 close to OBU-352 tamper
SW3.2 OFF: J6.51 open from OBU-352 tamper